Andover is in the middle of witch trials,but how is Andover dealing with it? Based on Andiver's situation what is Parris afraid of?

The townspeople of Andover have overthrown the court and will not allow further condemnation; Parris believes that Salem's community will do the same.

Parris: I tell you what is said here, sir. Andover have thrown out the court, they say, and will have no part of witchcraft. There be a faction here, feeding on that news, and I tell you true, sir, I fear there will be riot here.